Hybrid two-qubit gate using a circuit QED system with a triple-leg stripline resonator
Dong‐Min Kim, Kyungsun Moon · Physical Review A · 2018
We theoretically propose a circuit QED system implemented with a triple-leg stripline resonator (TSR). Unlike from a linear stripline resonator, the fundamental intracavity microwave modes of the TSR are twofold degenerate. When a superconducting qubit is placed near one of the TSR legs, one fundamental mode is directly coupled to the qubit, while the other one remains uncoupled. Using our circuit QED system, we have theoretically studied a two-qubit quantum gate operation in a hybrid qubit composed of a flying microwave qubit and a superconducting qubit. We have demonstrated that, for the hybrid qubit, the quantum controlled phase flip gate can be reliably implemented for the experimentally available set of parameters.